Irritator challengeri Variant:Unprimed a region exceptionally rich in

a region exceptionally rich in fossil marine vertebrates from the South American Pacific

Platecarpus se alimentaba principalmente de peces y otros animales marinos

honors the owner of the land where the discovery was made

6–11 ft) long

Arctodus simus became extinct toward the end of the Pleistocene

Irritator challengeri Variant:Unprimed a region exceptionally rich inIrritator challengeri is a species of spinosaurid theropod dinosaur that lived during the Early Cretaceous period, approximately 110 million years ago, in what is now Brazil. Its name comes from the Latin "irritator," referring to the frustration of paleontologists upon discovering that the original fossil had been altered with plaster by the collectors who found it, and "challengeri" in honor of Professor Challenger, a fictional character created by